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The fallback implementation of fesetexceptflag currently fails if any exceptions are specified. It should always succeed, because the exception state is always that all exceptions (if any are defined in <fenv.h> but not supported in this configuration) are always clear, just as fallback fetestexcept always succeeds and fallback fesetenv always succeeds unless asked to set FE_NOMASK_ENV. This patch fixes it accordingly. Together with the patch to test-fexcept.c to allow feraiseexcept to fail in another place, this stops that test from failing for MIPS soft-float. Tested for mips64 soft-float. [BZ #21028] * math/fsetexcptflg.c (__fesetexceptflag): Always return 0. * math/test-fexcept.c (test_set): Allow failure of feraiseexcept if EXCEPTION_TESTS returns false.
207 lines
5.9 KiB
C
207 lines
5.9 KiB
C
/* Test fegetexceptflag and fesetexceptflag.
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Copyright (C) 2016-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <fenv.h>
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#include <stdio.h>
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#include <math-tests.h>
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/* Like feraiseexcept, but raise exactly the specified exceptions EXC,
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without possibly raising "inexact" together with "overflow" or
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"underflow" as permitted by ISO C. (This is not used with traps
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enabled, so side-effects from raising and then clearing "inexact"
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are irrelevant.) */
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static int
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feraiseexcept_exact (int exc)
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{
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#ifdef FE_INEXACT
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int mask = 0;
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#ifdef FE_OVERFLOW
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mask |= FE_OVERFLOW;
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#endif
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#ifdef FE_UNDERFLOW
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mask |= FE_UNDERFLOW;
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#endif
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if ((exc & FE_INEXACT) != 0
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|| (exc & mask) == 0
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|| fetestexcept (FE_INEXACT) != 0)
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return feraiseexcept (exc);
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int ret = feraiseexcept (exc);
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feclearexcept (FE_INEXACT);
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return ret;
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#else
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return feraiseexcept (exc);
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#endif
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}
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static int
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test_set (int initial, const fexcept_t *saved, int mask, int expected)
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{
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int result = 0;
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feclearexcept (FE_ALL_EXCEPT);
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printf ("Testing set: initial exceptions %x, mask %x, expected %x\n",
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(unsigned int) initial, (unsigned int) mask,
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(unsigned int) expected);
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int ret = feraiseexcept_exact (initial);
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if (ret != 0)
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{
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puts ("feraiseexcept failed");
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if (initial == 0 || EXCEPTION_TESTS (float))
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{
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puts ("failure of feraiseexcept was unexpected");
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result = 1;
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}
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else
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puts ("failure of feraiseexcept OK, skipping further tests");
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return result;
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}
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ret = fesetexceptflag (saved, mask);
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if (ret != 0)
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{
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puts ("fesetexceptflag failed");
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result = 1;
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}
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else
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puts ("fesetexceptflag succeeded");
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ret = fetestexcept (FE_ALL_EXCEPT);
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if (ret != expected)
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{
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printf ("raised exceptions %x, expected %x\n",
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(unsigned int) ret, (unsigned int) expected);
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result = 1;
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}
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return result;
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}
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static int
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test_except (int exc, const char *exc_name)
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{
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int result = 0;
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printf ("Testing %s\n", exc_name);
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feclearexcept (FE_ALL_EXCEPT);
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fexcept_t clear_saved_exc, clear_saved_all;
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int ret = fegetexceptflag (&clear_saved_exc, exc);
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if (ret == 0)
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printf ("fegetexceptflag (%s) succeeded\n", exc_name);
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else
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{
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printf ("fegetexceptflag (%s) failed\n", exc_name);
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result = 1;
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return result;
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}
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ret = fegetexceptflag (&clear_saved_all, FE_ALL_EXCEPT);
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if (ret == 0)
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puts ("fegetexceptflag (FE_ALL_EXCEPT) succeeded");
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else
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{
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puts ("fegetexceptflag (FE_ALL_EXCEPT) failed");
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result = 1;
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return result;
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}
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ret = feraiseexcept_exact (exc);
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if (ret == 0)
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printf ("feraiseexcept (%s) succeeded\n", exc_name);
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else
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{
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printf ("feraiseexcept (%s) failed\n", exc_name);
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if (exc == 0 || EXCEPTION_TESTS (float))
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{
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puts ("failure of feraiseexcept was unexpected");
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result = 1;
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}
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else
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puts ("failure of feraiseexcept OK, skipping further tests");
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return result;
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}
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fexcept_t set_saved_exc, set_saved_all;
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ret = fegetexceptflag (&set_saved_exc, exc);
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if (ret == 0)
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printf ("fegetexceptflag (%s) succeeded\n", exc_name);
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else
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{
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printf ("fegetexceptflag (%s) failed\n", exc_name);
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result = 1;
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return result;
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}
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ret = fegetexceptflag (&set_saved_all, FE_ALL_EXCEPT);
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if (ret == 0)
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puts ("fegetexceptflag (FE_ALL_EXCEPT) succeeded");
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else
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{
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puts ("fegetexceptflag (FE_ALL_EXCEPT) failed");
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result = 1;
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return result;
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}
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result |= test_set (0, &set_saved_exc, exc, exc);
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result |= test_set (0, &set_saved_all, exc, exc);
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result |= test_set (0, &set_saved_all, FE_ALL_EXCEPT, exc);
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result |= test_set (0, &clear_saved_exc, exc, 0);
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result |= test_set (0, &clear_saved_all, exc, 0);
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result |= test_set (0, &clear_saved_all, FE_ALL_EXCEPT, 0);
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result |= test_set (exc, &set_saved_exc, exc, exc);
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result |= test_set (exc, &set_saved_all, exc, exc);
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result |= test_set (exc, &set_saved_all, FE_ALL_EXCEPT, exc);
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result |= test_set (exc, &clear_saved_exc, exc, 0);
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result |= test_set (exc, &clear_saved_all, exc, 0);
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result |= test_set (exc, &clear_saved_all, FE_ALL_EXCEPT, 0);
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result |= test_set (FE_ALL_EXCEPT, &set_saved_exc, exc, FE_ALL_EXCEPT);
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result |= test_set (FE_ALL_EXCEPT, &set_saved_all, exc, FE_ALL_EXCEPT);
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result |= test_set (FE_ALL_EXCEPT, &set_saved_all, FE_ALL_EXCEPT, exc);
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result |= test_set (FE_ALL_EXCEPT, &clear_saved_exc, exc,
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FE_ALL_EXCEPT & ~exc);
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result |= test_set (FE_ALL_EXCEPT, &clear_saved_all, exc,
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FE_ALL_EXCEPT & ~exc);
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result |= test_set (FE_ALL_EXCEPT, &clear_saved_all, FE_ALL_EXCEPT, 0);
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return result;
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}
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static int
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do_test (void)
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{
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int result = 0;
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result |= test_except (0, "0");
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result |= test_except (FE_ALL_EXCEPT, "FE_ALL_EXCEPT");
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#ifdef FE_DIVBYZERO
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result |= test_except (FE_DIVBYZERO, "FE_DIVBYZERO");
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#endif
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#ifdef FE_INEXACT
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result |= test_except (FE_INEXACT, "FE_INEXACT");
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#endif
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#ifdef FE_INVALID
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result |= test_except (FE_INVALID, "FE_INVALID");
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#endif
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#ifdef FE_OVERFLOW
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result |= test_except (FE_OVERFLOW, "FE_OVERFLOW");
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#endif
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#ifdef FE_UNDERFLOW
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result |= test_except (FE_UNDERFLOW, "FE_UNDERFLOW");
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#endif
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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